RX3DTN — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving RX3DTN, decoded by SO8OO in southeastern Poland. 2,996 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 120 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 2,996 FT8 messages attributed to RX3DTN as the transmitting token by decoded message structure across 120 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (33%), followed by 40 m (28%) and 80 m (17%). Most decodes (65%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

2,996
Messages attributed
120
UTC dates decoded
563
Active 15-min windows
-10 dB
Estimated median S/N

Bands

160m · 400 80m · 521 40m · 834 20m · 997 10m · 244
First attributed message: 2026-06-06
Last attributed message: 2026-10-23 22:08 UTC

Observed FT8 message patterns

Attributed sample
2,996 messages
Active dates
120 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-19 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 703, moderate (-15 to -9 dB) 1,058, strong (≥ -8 dB) 1,235.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with RX3DTN in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to RX3DTN

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
KO85 · 2,226 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,193 km (approx.)
Last such locator decoded
2026-10-23 22:06 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandRX3DTN S/NCounterpartCounterpart S/NMsgsCapture
10-23 22:04 80m -3 / - OD5ZZ - / -21 6 ✓ Closing fragment
10-23 21:03 80m -2 / - BI5FI/R - / - 13 Partial capture
10-23 20:59 80m -2 / - JR1IZM - / -18 3 ✓ Closing fragment
10-23 19:39 80m -6 / - JN1JFC - / - 5 Partial capture
10-23 19:36 80m -7 / - LX/DF2SD - / -18 2 Partial capture
10-23 17:21 160m -8 / - UT5EL - / - 2 Partial capture
10-22 21:06 160m -5 / - EX7DY - / -15 12 ✓ Closing fragment
10-22 19:22 160m -13 / - HF5A - / - 9 Partial capture
10-22 19:17 160m -4 / -11 DO6SHB +1 / -15 5 ✓ Full exchange observed
10-22 18:59 160m -14 / -1 R4FDK -11 / +1 5 ✓ Full exchange observed
10-21 20:52 80m +3 / - JH6EFI - / - 7 Partial capture
10-21 20:49 80m -7 / - JH6EFI - / - 2 Partial capture
10-21 19:53 80m - / -12 DL26BBQ +18 / - 4 ✓ Closing fragment
10-21 19:47 80m 0 / - P4/WE9V - / -10 11 Partial capture
10-18 18:29 80m -7 / -7 DC4BWS -3 / -11 4 ✓ Full exchange observed
10-17 22:02 80m -4 / -10 DD3JN +4 / -13 6 ✓ Full exchange observed
10-17 12:39 10m -15 / - <...> - / - 6 Partial capture
10-17 12:36 10m -16 / - PP5DKR - / - 5 Partial capture
10-17 12:26 10m -12 / - PP5DKR - / - 2 Partial capture
10-16 20:29 160m -4 / -13 LA9JKA -18 / -12 11 ✓ Full exchange observed
10-16 20:25 160m -10 / -3 RU3T -10 / -8 5 ✓ Full exchange observed
10-16 20:22 160m -4 / - UI3A - / - 2 Partial capture
10-16 18:47 160m -6 / - R4II -14 / -1 4 ✓ Closing observed
10-16 18:28 160m -12 / - RA3RGQ - / -4 2 ✓ Closing fragment
10-16 18:27 160m - / -14 R7AW -22 / - 2 Partial capture
10-16 18:24 160m -11 / - LY8O - / - 3 Partial capture
10-16 18:17 80m -4 / -7 SP9PLK +9 / -5 5 ✓ Full exchange observed
10-15 20:43 80m +3 / - JJ3JHP - / - 3 Partial capture
10-15 20:28 80m +2 / - JJ3JHP - / - 2 Partial capture
10-15 19:27 80m -6 / - YT9WW - / - 8 Partial capture
10-15 19:16 80m -11 / - YT9WW - / - 3 Partial capture
10-15 19:14 80m -3 / -6 SO1CJ +20 / -6 3 ✓ Full exchange observed
10-15 17:44 80m -6 / - RA7E/P - / - 2 Partial capture
10-15 17:24 80m -9 / -12 SN80PIM +4 / -17 6 Partial capture
10-15 17:22 80m - / -11 LZ936BA -1 / - 5 ✓ Closing fragment
10-15 17:21 80m -9 / - R9CS/P - / -20 5 Partial capture
10-14 17:34 80m -12 / - R3DPI - / - 2 Partial capture
10-14 16:55 160m - / -10 UR5VOA -2 / - 2 ✓ Closing fragment
10-13 20:53 80m -1 / -15 DO8JB -8 / - 3 ✓ Closing observed
10-13 17:36 160m -15 / +1 SM0CXS -6 / -10 3 ✓ Full exchange observed
10-13 17:01 80m -16 / - UA4UK - / - 2 Partial capture
10-12 19:30 80m -9 / - JR8BRK - / - 2 Partial capture
10-12 19:25 80m -5 / -15 TK4QP +7 / -18 7 ✓ Full exchange observed
10-12 18:41 160m -10 / - IZ2ZSF - / - 2 Partial capture
10-12 18:34 160m -13 / -12 HA8WY +13 / - 3 ✓ Closing observed
10-12 18:31 160m -15 / -5 SQ6WA 0 / -22 3 ✓ Full exchange observed
10-12 18:22 160m -17 / - UA4LDP - / -18 4 ✓ Closing fragment
10-12 18:20 160m -10 / -16 HB9DBM +4 / -11 6 ✓ Full exchange observed
10-12 18:07 80m -5 / - RL6ZK - / -11 4 ✓ Closing fragment
10-11 19:22 80m -6 / - UA6EU - / -10 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

80m 
UTC    dB Audio  Message
210600  -2  775  BI5FI/R RX3DTN KO85 (x9)
220430  -7  775  OD5ZZ RX3DTN KO85 (x6)
160m 
UTC    dB Audio  Message
192800 -10 1006  HF5A RX3DTN KO85
210645  -3  886  EX7DY RX3DTN KO85 (x12)
172100  -7 1111  UT5EL RX3DTN KO85 (x2)
10m 
UTC    dB Audio  Message
122630 -10  784  PP5DKR RX3DTN KO85 (x8)
123930 -18 2307  <...> RX3DTN KO85 (x6)
40m 
UTC    dB Audio  Message
133945 -15  846  SQ100LKK RX3DTN KO85
134200 -11  845  BG9JTK RX3DTN KO85
134430 -18  963  DS4EJA RX3DTN KO85
134500 -16  963  CQ RX3DTN KO85
134615  -2  492  RX3DTN SP3IPA RR73
134700 -17  962  R0DZ RX3DTN KO85 (x4)
161300  -6  757  RJ9M RX3DTN KO85 (x3)
175245 -14 1793  IK1MJK/P RX3DTN KO85 (x3)
20m 
UTC    dB Audio  Message
060815  -6 1924  <...> RX3DTN KO85 (x2)
071700 -11 1924  VK4BPK RX3DTN KO85 (x2)
084600  +0  989  RX3DTN RM6OS -06 (x2)
085645  -7 2188  SP9SIR RX3DTN KO85 (x3)
090130  +6 2189  CT2JTN RX3DTN KO85
091330  -9 2188  RA2FGK RX3DTN KO85
053900 -10  636  RX3DTN F1IQH JN27 (x4)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee